00:01
Okay, in order to answer this question, we have to talk about epithelial tissue, okay? the epithelial tissue is a group of cells, okay, that are practically widespread throughout the body.
00:15
Okay, they, for example, form the covering of all body surfaces.
00:27
Okay, they can also line body cavities and hollow organs.
00:39
And also they are the major tissue in glands.
00:45
Okay, so this is what epithelial tissue are practically.
00:50
They also perform a variety of functions.
00:54
Okay, for example, they have many functions.
00:56
For example, they perform the function of protection.
01:02
They also perform the function of secretion of substances.
01:07
Also absorption, excretion, filtration, filtration, filtration, diffusion, this is important for, for example, for gas exchange in the lungs, and also sensory reception.
01:27
Okay, these are the functions of the epithelial tissue.
01:31
And there are many types of epithelial tissues.
01:33
For example, we have the simple squamous, epithelial tissue.
01:39
We also have the simple cuboidal, the simple columnar, transitional, pseudo -stratified columnar, stratified co -boidal, and stratified squamose.
01:47
Okay, so we have many types of epithelial tissue.
01:50
But these are like the common functions for all of them.
01:55
For example, skin contains epithelial tissue and it is stratified.
02:05
And also it is keratinicide...